[PATCH] RapidIO support: core includes
Add RapidIO core include files.
The core code implements enumeration/discovery, management of
devices/resources, and interfaces for RIO drivers.
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/rio.h b/include/linux/rio.h
new file mode 100644
index 0000000..930bbb7
--- /dev/null
+++ b/include/linux/rio.h
@@ -0,0 +1,321 @@
+/*
+ * RapidIO interconnect services
+ * (RapidIO Interconnect Specification, http://www.rapidio.org)
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef LINUX_RIO_H
+#define LINUX_RIO_H
+
+#ifdef __KERNEL__
+
+#include <linux/types.h>
+#include <linux/config.h>
+#include <linux/ioport.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/rio_regs.h>
+
+#define RIO_ANY_DESTID 0xff
+#define RIO_NO_HOPCOUNT -1
+
+#define RIO_MAX_MPORT_RESOURCES 16
+#define RIO_MAX_DEV_RESOURCES 16
+
+#define RIO_GLOBAL_TABLE 0xff /* Indicates access of a switch's
+ global routing table if it
+ has multiple (or per port)
+ tables */
+
+#define RIO_INVALID_ROUTE 0xff /* Indicates that a route table
+ entry is invalid (no route
+ exists for the device ID) */
+
+#ifdef CONFIG_RAPIDIO_8_BIT_TRANSPORT
+#define RIO_MAX_ROUTE_ENTRIES (1 << 8)
+#else
+#define RIO_MAX_ROUTE_ENTRIES (1 << 16)
+#endif
+
+#define RIO_MAX_MBOX 4
+#define RIO_MAX_MSG_SIZE 0x1000
+
+/*
+ * Error values that may be returned by RIO functions.
+ */
+#define RIO_SUCCESSFUL 0x00
+#define RIO_BAD_SIZE 0x81
+
+/*
+ * For RIO devices, the region numbers are assigned this way:
+ *
+ * 0 RapidIO outbound doorbells
+ * 1-15 RapidIO memory regions
+ *
+ * For RIO master ports, the region number are assigned this way:
+ *
+ * 0 RapidIO inbound doorbells
+ * 1 RapidIO inbound mailboxes
+ * 1 RapidIO outbound mailboxes
+ */
+#define RIO_DOORBELL_RESOURCE 0
+#define RIO_INB_MBOX_RESOURCE 1
+#define RIO_OUTB_MBOX_RESOURCE 2
+
+extern struct bus_type rio_bus_type;
+extern struct list_head rio_devices; /* list of all devices */
+
+struct rio_mport;
+
+/**
+ * struct rio_dev - RIO device info
+ * @global_list: Node in list of all RIO devices
+ * @net_list: Node in list of RIO devices in a network
+ * @net: Network this device is a part of
+ * @did: Device ID
+ * @vid: Vendor ID
+ * @device_rev: Device revision
+ * @asm_did: Assembly device ID
+ * @asm_vid: Assembly vendor ID
+ * @asm_rev: Assembly revision
+ * @efptr: Extended feature pointer
+ * @pef: Processing element features
+ * @swpinfo: Switch port info
+ * @src_ops: Source operation capabilities
+ * @dst_ops: Destination operation capabilities
+ * @rswitch: Pointer to &struct rio_switch if valid for this device
+ * @driver: Driver claiming this device
+ * @dev: Device model device
+ * @riores: RIO resources this device owns
+ * @destid: Network destination ID
+ */
+struct rio_dev {
+ struct list_head global_list; /* node in list of all RIO devices */
+ struct list_head net_list; /* node in per net list */
+ struct rio_net *net; /* RIO net this device resides in */
+ u16 did;
+ u16 vid;
+ u32 device_rev;
+ u16 asm_did;
+ u16 asm_vid;
+ u16 asm_rev;
+ u16 efptr;
+ u32 pef;
+ u32 swpinfo; /* Only used for switches */
+ u32 src_ops;
+ u32 dst_ops;
+ struct rio_switch *rswitch; /* RIO switch info */
+ struct rio_driver *driver; /* RIO driver claiming this device */
+ struct device dev; /* LDM device structure */
+ struct resource riores[RIO_MAX_DEV_RESOURCES];
+ u16 destid;
+};
+
+#define rio_dev_g(n) list_entry(n, struct rio_dev, global_list)
+#define rio_dev_f(n) list_entry(n, struct rio_dev, net_list)
+#define to_rio_dev(n) container_of(n, struct rio_dev, dev)
+
+/**
+ * struct rio_msg - RIO message event
+ * @res: Mailbox resource
+ * @mcback: Message event callback
+ */
+struct rio_msg {
+ struct resource *res;
+ void (*mcback) (struct rio_mport * mport, int mbox, int slot);
+};
+
+/**
+ * struct rio_dbell - RIO doorbell event
+ * @node: Node in list of doorbell events
+ * @res: Doorbell resource
+ * @dinb: Doorbell event callback
+ */
+struct rio_dbell {
+ struct list_head node;
+ struct resource *res;
+ void (*dinb) (struct rio_mport * mport, u16 src, u16 dst, u16 info);
+};
+
+/**
+ * struct rio_mport - RIO master port info
+ * @dbells: List of doorbell events
+ * @node: Node in global list of master ports
+ * @nnode: Node in network list of master ports
+ * @iores: I/O mem resource that this master port interface owns
+ * @riores: RIO resources that this master port interfaces owns
+ * @inb_msg: RIO inbound message event descriptors
+ * @outb_msg: RIO outbound message event descriptors
+ * @host_deviceid: Host device ID associated with this master port
+ * @ops: configuration space functions
+ * @id: Port ID, unique among all ports
+ * @index: Port index, unique among all port interfaces of the same type
+ * @name: Port name string
+ */
+struct rio_mport {
+ struct list_head dbells; /* list of doorbell events */
+ struct list_head node; /* node in global list of ports */
+ struct list_head nnode; /* node in net list of ports */
+ struct resource iores;
+ struct resource riores[RIO_MAX_MPORT_RESOURCES];
+ struct rio_msg inb_msg[RIO_MAX_MBOX];
+ struct rio_msg outb_msg[RIO_MAX_MBOX];
+ int host_deviceid; /* Host device ID */
+ struct rio_ops *ops; /* maintenance transaction functions */
+ unsigned char id; /* port ID, unique among all ports */
+ unsigned char index; /* port index, unique among all port
+ interfaces of the same type */
+ unsigned char name[40];
+};
+
+/**
+ * struct rio_net - RIO network info
+ * @node: Node in global list of RIO networks
+ * @devices: List of devices in this network
+ * @mports: List of master ports accessing this network
+ * @hport: Default port for accessing this network
+ * @id: RIO network ID
+ */
+struct rio_net {
+ struct list_head node; /* node in list of networks */
+ struct list_head devices; /* list of devices in this net */
+ struct list_head mports; /* list of ports accessing net */
+ struct rio_mport *hport; /* primary port for accessing net */
+ unsigned char id; /* RIO network ID */
+};
+
+/**
+ * struct rio_switch - RIO switch info
+ * @node: Node in global list of switches
+ * @switchid: Switch ID that is unique across a network
+ * @hopcount: Hopcount to this switch
+ * @destid: Associated destid in the path
+ * @route_table: Copy of switch routing table
+ * @add_entry: Callback for switch-specific route add function
+ * @get_entry: Callback for switch-specific route get function
+ */
+struct rio_switch {
+ struct list_head node;
+ u16 switchid;
+ u16 hopcount;
+ u16 destid;
+ u8 route_table[RIO_MAX_ROUTE_ENTRIES];
+ int (*add_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 route_port);
+ int (*get_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 * route_port);
+};
+
+/* Low-level architecture-dependent routines */
+
+/**
+ * struct rio_ops - Low-level RIO configuration space operations
+ * @lcread: Callback to perform local (master port) read of config space.
+ * @lcwrite: Callback to perform local (master port) write of config space.
+ * @cread: Callback to perform network read of config space.
+ * @cwrite: Callback to perform network write of config space.
+ * @dsend: Callback to send a doorbell message.
+ */
+struct rio_ops {
+ int (*lcread) (int index, u32 offset, int len, u32 * data);
+ int (*lcwrite) (int index, u32 offset, int len, u32 data);
+ int (*cread) (int index, u16 destid, u8 hopcount, u32 offset, int len,
+ u32 * data);
+ int (*cwrite) (int index, u16 destid, u8 hopcount, u32 offset, int len,
+ u32 data);
+ int (*dsend) (int index, u16 destid, u16 data);
+};
+
+#define RIO_RESOURCE_MEM 0x00000100
+#define RIO_RESOURCE_DOORBELL 0x00000200
+#define RIO_RESOURCE_MAILBOX 0x00000400
+
+#define RIO_RESOURCE_CACHEABLE 0x00010000
+#define RIO_RESOURCE_PCI 0x00020000
+
+#define RIO_RESOURCE_BUSY 0x80000000
+
+/**
+ * struct rio_driver - RIO driver info
+ * @node: Node in list of drivers
+ * @name: RIO driver name
+ * @id_table: RIO device ids to be associated with this driver
+ * @probe: RIO device inserted
+ * @remove: RIO device removed
+ * @suspend: RIO device suspended
+ * @resume: RIO device awakened
+ * @enable_wake: RIO device enable wake event
+ * @driver: LDM driver struct
+ *
+ * Provides info on a RIO device driver for insertion/removal and
+ * power management purposes.
+ */
+struct rio_driver {
+ struct list_head node;
+ char *name;
+ const struct rio_device_id *id_table;
+ int (*probe) (struct rio_dev * dev, const struct rio_device_id * id);
+ void (*remove) (struct rio_dev * dev);
+ int (*suspend) (struct rio_dev * dev, u32 state);
+ int (*resume) (struct rio_dev * dev);
+ int (*enable_wake) (struct rio_dev * dev, u32 state, int enable);
+ struct device_driver driver;
+};
+
+#define to_rio_driver(drv) container_of(drv,struct rio_driver, driver)
+
+/**
+ * struct rio_device_id - RIO device identifier
+ * @did: RIO device ID
+ * @vid: RIO vendor ID
+ * @asm_did: RIO assembly device ID
+ * @asm_vid: RIO assembly vendor ID
+ *
+ * Identifies a RIO device based on both the device/vendor IDs and
+ * the assembly device/vendor IDs.
+ */
+struct rio_device_id {
+ u16 did, vid;
+ u16 asm_did, asm_vid;
+};
+
+/**
+ * struct rio_route_ops - Per-switch route operations
+ * @vid: RIO vendor ID
+ * @did: RIO device ID
+ * @add_hook: Callback that adds a route entry
+ * @get_hook: Callback that gets a route entry
+ *
+ * Defines the operations that are necessary to manipulate the route
+ * tables for a particular RIO switch device.
+ */
+struct rio_route_ops {
+ u16 vid, did;
+ int (*add_hook) (struct rio_mport * mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 route_port);
+ int (*get_hook) (struct rio_mport * mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 * route_port);
+};
+
+/* Architecture and hardware-specific functions */
+extern int rio_init_mports(void);
+extern void rio_register_mport(struct rio_mport *);
+extern int rio_hw_add_outb_message(struct rio_mport *, struct rio_dev *, int,
+ void *, size_t);
+extern int rio_hw_add_inb_buffer(struct rio_mport *, int, void *);
+extern void *rio_hw_get_inb_message(struct rio_mport *, int);
+extern int rio_open_inb_mbox(struct rio_mport *, int, int);
+extern void rio_close_inb_mbox(struct rio_mport *, int);
+extern int rio_open_outb_mbox(struct rio_mport *, int, int);
+extern void rio_close_outb_mbox(struct rio_mport *, int);
+
+#endif /* __KERNEL__ */
+#endif /* LINUX_RIO_H */